hit the dyno again.

flattusmaximus78 · June 2nd, 2009, 06:20 PM

Didn't get an accurate hp reading again. The base it did 388hp and like 360 tq. Then the next run it did 320hp and 438 tq. So It ate up my plugs

My guess is the hp is just a little over what the tq was. The best part was it was on a mustang dyno! So I'm happy. Idk the boost... It was to loud in the garge on the dyno to stand next to the car. Should be 14psi. It sucks I'm using gt40ps.... it flattens out the power band a little past 5200. Can't rip on it yet since it will break up but when I get new plugs on her she should ride out quite nicely.

93hatch · June 2nd, 2009, 06:24 PM

whyd it funk the plugs up?

Iwannagofast · June 2nd, 2009, 10:20 PM

how did the torque jump like that

White Thunder · June 2nd, 2009, 10:24 PM

increase in boost?

flattusmaximus78 · June 2nd, 2009, 10:45 PM

I put a 14psi pulley on the car like said in the original post. I think the plugs were to rich... I haven't pulled em yet. I'm praying fixing the plugs wont eff the tune up, but it will pick up about 100 hp or so, so we will see.Car runs smooth as butter. Like I said before the plugs started breaking up untuned it did 388. So I imagine it's mid 4's.

White Thunder · June 2nd, 2009, 10:48 PM

thats hot shit

Iwannagofast · June 2nd, 2009, 11:00 PM

so did you swap the pulley between those two runs?

White Thunder · June 2nd, 2009, 11:01 PM

no he didnt

Iwannagofast · June 2nd, 2009, 11:03 PM

thats why i dont understand how the hp went down so much but the torque went up so much

White Thunder · June 2nd, 2009, 11:03 PM

im not sure either....

Iownastang · June 2nd, 2009, 11:48 PM

I didnt know plugs broke up

How longs has it been since you put new ones in it and what were they gapped at.. Unless your car was pig ass rich i see no reason as to why the plugs went bad on you..

grnstang · June 2nd, 2009, 11:49 PM

your dyno visits are always weird haha

1slo5.0 · June 3rd, 2009, 12:29 AM

Originally Posted by Iwannagofast

thats why i dont understand how the hp went down so much but the torque went up so much

I agree, it doesn't make any sense. The horsepower is just a calculation of the torque and rpm so if the torque increased that much then the horsepower should have equivalently.

I'm curious as to what rpm these numbers are at and I would like to see a graph of the pass with 438 ft/lbs of torque and 320hp to see what the lines are doing.

flattusmaximus78 · June 3rd, 2009, 11:15 AM

It made the 430ish at 2000 rpms. So low that it was still accurate. But then the hp across the board went to shit. That the was max hp and tq it it made across the run. Because it just fell off immediatly.

1slo5.0 · June 3rd, 2009, 12:27 PM

Originally Posted by flattusmaximus78

It made the 430ish at 2000 rpms. So low that it was still accurate. But then the hp across the board went to shit. That the was max hp and tq it it made across the run. Because it just fell off immediatly.

I'd like to see what the graph looks like. How do you know you have a spark plug issue.

baine21225 · June 3rd, 2009, 01:04 PM

what are you gapping at?

flattusmaximus78 · June 3rd, 2009, 01:52 PM

I know it was a plug issue because it was misfiring at wot. They were gapped at .34. Idk if they were fouled out or the gap got messed up. I'm going to swap the plugs today so we will see.

grnstang · June 3rd, 2009, 02:07 PM

so do you have a good tune on your car or will you have to go back again

1slo5.0 · June 3rd, 2009, 03:17 PM

Originally Posted by flattusmaximus78

I know it was a plug issue because it was misfiring at wot. They were gapped at .34. Idk if they were fouled out or the gap got messed up. I'm going to swap the plugs today so we will see.

How do you know it was a misfire and not a valve spring issue? Even if it was a misfire, there are more possibilities than just spark plugs.

baine21225 · June 3rd, 2009, 03:36 PM

i think you should be gapping a little closer than .034

June 2nd, 2009, 06:20 PM	#1
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	hit the dyno again. Didn't get an accurate hp reading again. The base it did 388hp and like 360 tq. Then the next run it did 320hp and 438 tq. So It ate up my plugs My guess is the hp is just a little over what the tq was. The best part was it was on a mustang dyno! So I'm happy. Idk the boost... It was to loud in the garge on the dyno to stand next to the car. Should be 14psi. It sucks I'm using gt40ps.... it flattens out the power band a little past 5200. Can't rip on it yet since it will break up but when I get new plugs on her she should ride out quite nicely. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

June 2nd, 2009, 06:24 PM	#2
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	whyd it funk the plugs up? __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

June 2nd, 2009, 10:45 PM	#5
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	I put a 14psi pulley on the car like said in the original post. I think the plugs were to rich... I haven't pulled em yet. I'm praying fixing the plugs wont eff the tune up, but it will pick up about 100 hp or so, so we will see.Car runs smooth as butter. Like I said before the plugs started breaking up untuned it did 388. So I imagine it's mid 4's. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

June 2nd, 2009, 11:48 PM	#11
Iownastang I Post Entirely Way Too Much 1987 ford mustang gt well see when shes done Join Date: May 2007 Location: mascot, tn Posts: 5,020 iTrader: 0 reviews	I didnt know plugs broke up How longs has it been since you put new ones in it and what were they gapped at.. Unless your car was pig ass rich i see no reason as to why the plugs went bad on you.. __________________ 2004 tahoe z71 Daily 2004 BBM Gto ls1 6 speed 57,000 miles 1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600

June 2nd, 2009, 11:49 PM	#12
grnstang Hardcore Enthusiast 91 LX 13.7@101 Join Date: Oct 2008 Location: Norwalk OH Posts: 1,426 iTrader: 1 reviews	your dyno visits are always weird haha __________________

June 3rd, 2009, 11:15 AM	#14
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	It made the 430ish at 2000 rpms. So low that it was still accurate. But then the hp across the board went to shit. That the was max hp and tq it it made across the run. Because it just fell off immediatly. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

June 3rd, 2009, 01:04 PM	#16
baine21225 MM Fanatic Join Date: Jun 2007 Location: Baltimore, MD Posts: 4,349 iTrader: 1 reviews	what are you gapping at? __________________ "That's how Dad did it, that's how America does it... and it's worked out pretty well so far..."

June 3rd, 2009, 01:52 PM	#17
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	I know it was a plug issue because it was misfiring at wot. They were gapped at .34. Idk if they were fouled out or the gap got messed up. I'm going to swap the plugs today so we will see. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

June 3rd, 2009, 02:07 PM	#18
grnstang Hardcore Enthusiast 91 LX 13.7@101 Join Date: Oct 2008 Location: Norwalk OH Posts: 1,426 iTrader: 1 reviews	so do you have a good tune on your car or will you have to go back again __________________

June 3rd, 2009, 03:36 PM	#20
baine21225 MM Fanatic Join Date: Jun 2007 Location: Baltimore, MD Posts: 4,349 iTrader: 1 reviews	i think you should be gapping a little closer than .034 __________________ "That's how Dad did it, that's how America does it... and it's worked out pretty well so far..."

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